IMPLANTED CARDIAC DEVICE FOR DEFIBRILLATION

• US 20140128935A1
• Filed: 01/14/2014
• Published: 05/08/2014
• Est. Priority Date: 03/01/2006
• Status: Abandoned Application

• Current Assignee: Board of Trustees of the Leland Stanford Junior University (Stanford Management Co.)
• Original Assignee: John Warren White, Joseph Allen Knight, Kit Yee Au-Yeung, Uday N. Kumar
• Inventors: KUMAR, Uday N., WHITE, John Warren, KNIGHT, Joseph Allen, AU-YEUNG, Kit Yee
• Application Number:
  US14/155,277
• Publication Number:
  US 20140128935A1
• Time in Patent Office: Days
• US Class Current: 607/27
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 1/37 Monitoring; Protecting
• CPC Class Codes: A61N 1/375 Constructional arrangements, e.g. casings
• CPC Class Codes: A61N 1/37516 Intravascular implants
• CPC Class Codes: A61N 1/37518 Anchoring of the implants, e.g. fixation
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators
• CPC Class Codes: A61N 1/39622 Pacing therapy
• CPC Class Codes: A61N 1/3968 Constructional arrangements, e.g. casings A61N1/375 takes precedence

Abstract

An implantable medical device for delivering electrical cardiac therapy includes a first implantable housing containing a battery. There is also a second implantable housing separate from the first implantable housing and containing at least one of: electronic circuitry adapted to evaluate and initiate electrical cardiac therapy, a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode. There is a method of providing electrical cardiac therapy by implanting a first housing containing a battery into a first implantation site within the body. Then, implant a second housing separate from the first housing into a second implantation site within the body. The second housing contains at least one of: electronic circuitry adapted to evaluate and initiate electrical cardiac therapy; a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode.

Claims

1. An implantable medical device for delivering electrical cardiac therapy, comprising:

a first implantable housing containing a battery;

a second implantable housing separate from the first implantable housing and containing at least one of;

electronic circuitry adapted to evaluate and initiate electrical cardiac therapy, a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode, wherein the electronic circuitry, the storage capacitor or the electrode structure is electrically connected to the battery.

2. The implantable medical device for delivering electrical cardiac therapy according to claim 1 wherein the second implantable housing contains at least two of:

electronic circuitry adapted to evaluate and initiate electrical cardiac therapy, a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode.

3. The implantable medical device for delivering electrical cardiac therapy according to claim 1 wherein the second implantable housing contains all of:

electronic circuitry adapted to evaluate and initiate electrical cardiac therapy, a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode.

4. The implantable medical device for delivering electrical cardiac therapy according to claim 1 wherein the second housing has a stowed condition for delivery to an implantation location and a deployed condition for operation in an implantation location.

5. The implantable medical device for delivering electrical cardiac therapy according to claim 4 wherein the second housing is adapted for delivery to an implantation location using a hollowed cannula while in the stowed condition.

6. A method of providing electrical cardiac therapy, comprising:

implanting a first housing containing a battery into a first implantation site within the body; and

implanting a second housing separate from the first housing into a second implantation site within the body, the second housing containing at least one of;

electronic circuitry adapted to evaluate and initiate electrical cardiac therapy, a storage capacitor and an electrode structure comprising a sensing electrode, a pacing electrode and a therapy electrode, wherein the electronic circuitry, the storage capacitor or the electrode structure is electrically connected to the battery.

7. The method of providing electrical cardiac therapy according to claim 6 wherein the second implantation site is subcutaneous, within the vasculature, or within the pericardial space.

8. The method of providing electrical cardiac therapy according to claim 6 wherein the first implantation site is closer to the surface of the skin than the second implantation site.

9. The method of providing electrical cardiac therapy according to claim 6 wherein the electrode structure is in contact with the epicardium.

10. The method of providing electrical cardiac therapy according to claim 6 further comprising the step of;

using a hollowed cannula to access the second implantation site before the implanting the second housing step.